河南农业科学 ›› 2023, Vol. 52 ›› Issue (6): 120-130.DOI: 10.15933/j.cnki.1004-3268.2023.06.013

• 园艺 • 上一篇    下一篇

不同品种石榴枝条的抗寒性评价

雷梦瑶1,高小峰2,白清敏3,邓珂4,左卫芳1,李玉英1   

  1. (1.南阳师范学院河南省软籽石榴工程研究中心,河南省南水北调中线水源区流域生态安全国际联合实验室,河南 南阳 473061;2.南阳市农业科学院,河南 南阳 473000;3.南阳市农村能源环境保护管理站,河南 南阳 473000;4.南阳农业职业学院农业工程学院,河南 南阳 473000)
  • 收稿日期:2023-01-05 出版日期:2023-06-15 发布日期:2023-07-11
  • 通讯作者: 李玉英(1969-),女,河南南召人,教授,主要从事生态农业与水生态学研究。E-mail:lyying200508@163.com
  • 作者简介:雷梦瑶(1997-),女,河南周口人,在读硕士研究生,研究方向:特色植物栽培。E-mail:1510234573@qq.com
  • 基金资助:
    河南省重点研发专项(2211111520600);河南省科技厅高等学校学科创新引智基地项目(CXJD2019001);河南省科技创新体系建设项目(192207310029)

Evaluation of Cold Resistance of Pomegranate Branches from Different Varieties

LEI Mengyao1,GAO Xiaofeng2,BAI Qingmin3,DENG Ke4,ZUO Weifang1,LI Yuying1   

  1. (1.Engineering Research Center of Soft Seed Pomegranate in Henan Province,International Joint Laboratory of Watershed Ecological Security for Water Source Region of Middle Route Project of South⁃North Water Diversion in Henan Province,Nanyang Normal University,Nanyang 473061,China;2.Nanyang Academy of Agricultural Sciences,Nanyang 473000,China;3.Nanyang Rural Energy and Environmental Protection Management Station,Nanyang 473000,China;4.Agricultural Engineering College,Nanyang Vocational College of Agriculture,Nanyang 473000,China)
  • Received:2023-01-05 Published:2023-06-15 Online:2023-07-11

摘要: 为筛选抗寒石榴品种,以河南省南阳市淅川县生长的石榴品种突尼斯、中农红、红双喜和千层花1年生休眠期枝条为试材,通过模拟低温胁迫环境,分别在4℃、0℃、-3℃、-6℃、-9℃、-12℃和-15℃的低温下处理24 h,测定相对电导率(REC),脯氨酸、可溶性糖、可溶性蛋白、丙二醛(MDA)含量,过氧化物酶(POD)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性等指标,并利用隶属函数法综合评价4个品种石榴枝条的抗寒性。结果表明,千层花的半致死温度(LT50)最低,达到-6.94℃,红双喜最高,为−2.27℃;随着温度降低,4个品种枝条POD活性、可溶性糖含量和相对电导率整体呈上升趋势,SOD、CAT活性及MDA、可溶性蛋白含量整体呈先升后降趋势,脯氨酸含量整体呈先降后升趋势。利用隶属函数法综合评价的石榴品种抗寒性强弱顺序为千层花>红双喜>突尼斯>中农红。

关键词: 石榴, 低温胁迫, 隶属函数法, 抗寒性, 评价

Abstract: In order to screen cold resistant varieties of pomegranate,one year dormant branches of pomegranate varieties Tunisi,Zhongnonghong,Hongshuangxi and Qiancenghua grown in the Xichuan area were used as test materials. Under simulated low temperature stress conditions,they were treated at low temperatures of 4℃,0℃,-3℃,-6℃,-9℃,-12℃ and -15℃ for 24 hours,the relative electrical conductivity(REC),the content of proline,soluble sugar,soluble protein,and malondialdehyde(MDA),and the activities of peroxidase(POD),superoxide dismutase(SOD)and catalase(CAT)were measured,and the cold resistance of pomegranate branches of four varieties was comprehensively evaluated by membership function method.The results showed that the LT50 of Qiancenghua was the lowest,reaching−6.94℃,and that of Hongshuangxi was the highest,being -2.27℃.With the decrease of temperature,the POD activity,soluble sugar content,and relative conductivity of the branches of the four varieties showed an overall upward trend,the SOD and CAT activity,MDA and soluble protein content showed an overall upward and then downward trend,while the proline content showed an overall downward and then upward trend.The order of cold resistance of pomegranate varieties comprehensively evaluated by the method of subordination function is Qiancenghua>Hongshuangxi>Tunisi>Zhongnonghong.

Key words: Pomegranate, Low temperature stress, Membership function method, Cold resistance, Evaluation

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